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Investments in Marketable Securities | 12 Months Ended
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Jan. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
Investments in Marketable Securities | Investments in Marketable Securities The following tables summarize the Company's investments in marketable securities:
| January 31, 2023
(in thousands) | Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value
Money market funds | $ | 68,165 |  |  | $ | — |  |  | $ | — |  |  | $ | 68,165 |
U.S. treasury securities | 40,372 |  |  | — |  |  | (9) |  |  | 40,363 |
Total marketable securities | $ | 108,537 |  |  | $ | — |  |  | $ | (9) |  |  | $ | 108,528 |
| January 31, 2022
(in thousands) | Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value
Money market funds | $ | 138,470 |  |  | $ | — |  |  | $ | — |  |  | $ | 138,470 |
U.S. treasury securities | — |  |  | — |  |  | — |  |  | — |
Total marketable securities | $ | 138,470 |  |  | $ | — |  |  | $ | — |  |  | $ | 138,470 |
As of January 31, 2023 and 2022, the Company's marketable securities have a maturity of 90 days or less and are classified as cash and cash equivalents. For the fiscal years ended January 31, 2023, 2022 and 2021, the Company had no material reclassification adjustments from accumulated other comprehensive loss to net loss. The Company classifies interest income on investments in marketable securities, amortization of premiums and discounts, and realized gains and losses on securities available for sale within interest income in the consolidated statements of operations and comprehensive loss. The Company regularly reviews its debt securities and monitors the surrounding economic conditions to assess the risk of expected credit losses. As of January 31, 2023 and 2022, the unrealized losses and the related risk of expected credit losses were not significant.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2176304 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) + Details
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